Não informado. (1965). Journal of the Nigerian Institute for Oil Palm Research. Nigerian Institute for Oil Palm Research.
Chicago-viite (17. p.)Não informado. Journal of the Nigerian Institute for Oil Palm Research. Benin City, Nigeria: Nigerian Institute for Oil Palm Research, 1965.
MLA-viite (8. p.)Não informado. Journal of the Nigerian Institute for Oil Palm Research. Nigerian Institute for Oil Palm Research, 1965.
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